Marine general William H. Rupertus is best known today for writing the Corps' Rifleman's Creed, which begins, "This is my rifle. There are many like it, but this one is mine"--which has been made famous by films such as Full Metal Jacket and Jarhead. Rupertus was one of the outstanding Marines of the twentieth century, standing alongside men such as Smedley Butler, Chesty Puller, and Arthur Vandegrift, but he died in 1945, so his...